Extending from the Snake River just north of Ashton Idaho to the Montana borders near the Madison River and the Continental Divide, Island Park sits atop Targee Pass only a few miles from West Yellowstone. This area has so many amazing opportunites for recreational activites of all kinds, Island Park will undoubtedly entice your return over and over again.

Such activites include boating, water skiing, swimming, canoeing, horseback riding, fishing, hunting, bird watching, snowmobiling, cross-country skiing, snow shoeing, ice fishing, hiking, mountain biking, ATV-riding, river float trips, golf, tennis and much, much more!

Other area highlights include:

Big Springs/Johnny Sack Cabin
The spawning grounds of some of the best trout in the world, Big Springs is the head waters of the Henry's Fork of the Snake River. Also located at Big Springs is The Johnny Sack Cabin. On the National Register of Historic Places, this cabin has many unique features and is open to visitors during the summer.

Island Park Reservoir
Formed by the Island Park Dam at the head of the Box Canyon, this reservoir's body of water covers 8,400 acres and is popular for boating, fishing and water sports of all kinds. Five boat ramps/docks are available on this large reservoir as well as camping. Visitors may also drive on the top of the Island Park Dam for scenic views of the Centennial Mountains and Box Canyon.

Mount Sawtelle
Located on the west side of Henry's Lake Flats, the elevation at the top of Mount Sawtelle (also known as Sawtelle Peak) is 9,902 feet. This radio facility is accessible by car during the summer and offers a spectacular view of three states and Yellowstone National Park.

Harriman State Park
Formerly know as Railroad Ranch, this 16,000 acre wildlife refuge was a gift to the people of Idaho from the Harriman family for all future generations to enjoy. The Henry's Fork of the Snake River, one of the most famous fly fishing rivers in the world, gently winds through nine miles of park meadows and forests. This historic site and working cattle ranch also offers hiking, horseback riding, wagon rides, scenic tours and cross-country skiing to mention a few.

Henry's Fork of the Snake River
Named for Andrew Henry, a fur trader who first saw it in 1810, Henry's Fork of the Snake River is acclaimed by fly fishing enthusiasts as the best trout fishing stream in the United States. It begins at Big Springs, winds through Harriman State Park and continues all the way down to Ashton where it joins the Snake River. The spectacular Upper and Lower Mesa Falls are also found along the Henry's Fork.

Henry's Lake State Park
The trout fishing in Henry's Lake is an angler's dream come true! The scenary around the lake is equally amazing... Offering boating, camping and hiking opportunities on the Coffee Pot Rapids Trail, Henry's Lake State Park is only 15 miles west of Yellowstone National Park.

Upper and Lower Mesa Falls
Not far out of Island Park, on the Mesa Falls Scenic Byway, are two spectacular waterfalls on the Henry's Fork of the Snake River. Upper Mesa is a majestic fall of 105 feet. Downstream, the river is squeezed into a gorge that drops 65 feet creating Lower Mesa Falls. Secluded spots along this stretch of Henry's Fork offer excellent trout fishing and camping in the summer. In winter it is accessible by snowmobile or cross-country skis.

Yellowstone National Park
Yellowstone is the first and oldest national park in the world preserving Old Faithful and some 10,000 other hot springs and geysers. An outstanding mountain wildland, Yellowstone National Park is home of the grizzly bear and wolf, and free-ranging herds of bison and elk.

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